22324

Appears in sequences

• Fibonacci sequence beginning 1, 22.at n=16A022392
• Volume (multiplied by 3) of polyhedron formed by points (i,j,k) in Z^3 with i^2+j^2+k^2 = n^2.at n=13A065089
• Numbers n such that h(n) = 3 h(n-1) where h(n) is the length of the sequence {n, f(n), f(f(n)), ...., 1} in the Collatz (or 3x + 1) problem. (The earliest "1" is meant.)at n=23A078420
• Row sums of triangle A099512, so that a(n) = Sum_{k=0..n} coefficient of z^k in (1 + 3*z + z^2)^(n-[k/2]), where [k/2] is the integer floor of k/2.at n=9A099513
• Coefficients of the A-Dyson Mod 27 identity.at n=38A104501
• Positions where A109890(n) = Sum_{i = 1..n-1} A109890(i).at n=35A111315
• Put the natural numbers together without spaces and read them five at a time advancing one space each time.at n=34A193493
• Number of nX5 0..3 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=5A201448
• Number of nX6 0..3 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=4A201449
• T(n,k)=Number of nXk 0..3 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=49A201451
• T(n,k)=Number of nXk 0..3 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=50A201451
• Number of partitions of n such that the m(number of distinct parts) is a part, where m = multiplicity.at n=44A240307
• Number of squarefree parts in the partitions of n into 9 parts.at n=39A309463
• a(n) is the number of bilaterally symmetrical self-avoiding paths connecting consecutive corners of an n X n triangular grid.at n=7A343310